Compare · ModelsLive · 2 picked · head to head
DeepSeek V4.1 Flash 1017 vs GPT-5
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
DeepSeek V4.1 Flash 1017 wins on 9/10 benchmarks
DeepSeek V4.1 Flash 1017 wins 9 of 10 shared benchmarks. Leads in agentic · reasoning · knowledge.
Category leads
agentic·DeepSeek V4.1 Flash 1017reasoning·DeepSeek V4.1 Flash 1017knowledge·DeepSeek V4.1 Flash 1017math·DeepSeek V4.1 Flash 1017general·DeepSeek V4.1 Flash 1017
Hype vs Reality
Attention vs performance
DeepSeek V4.1 Flash 1017
#41 by perf·#4 by attention
GPT-5
#116 by perf·#9 by attention
Best value
DeepSeek V4.1 Flash 1017
27.5x better value than GPT-5
DeepSeek V4.1 Flash 1017
254.9 pts/$
$0.25/M
GPT-5
9.3 pts/$
$5.63/M
Vendor risk
Mixed exposure
One or more vendors flagged
DeepSeek
$3.4B·Tier 1
OpenAI
$840.0B·Tier 1
Head to head
10 benchmarks · 2 models
DeepSeek V4.1 Flash 1017GPT-5
APEX-Agents
DeepSeek V4.1 Flash 1017 leads by +51.5
APEX-Agents · evaluates AI agents on complex, multi-step tasks requiring planning, tool use, and autonomous decision-making in realistic environments.
DeepSeek V4.1 Flash 1017
69.8
GPT-5
18.3
ARC-AGI
DeepSeek V4.1 Flash 1017 leads by +28.8
ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization.
DeepSeek V4.1 Flash 1017
94.5
GPT-5
65.7
ARC-AGI-2
DeepSeek V4.1 Flash 1017 leads by +68.2
ARC-AGI-2 · the second iteration of the Abstraction and Reasoning Corpus, testing novel pattern recognition and abstract reasoning without prior training data.
DeepSeek V4.1 Flash 1017
78.1
GPT-5
9.9
Chess Puzzles
DeepSeek V4.1 Flash 1017 leads by +6.2
Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities.
DeepSeek V4.1 Flash 1017
43.2
GPT-5
37.0
FrontierMath-Tier-4-v2-Private
DeepSeek V4.1 Flash 1017 leads by +24.4
DeepSeek V4.1 Flash 1017
46.3
GPT-5
21.9
FrontierMath-Tiers-1-3-v2-Private
DeepSeek V4.1 Flash 1017 leads by +16.6
DeepSeek V4.1 Flash 1017
75.0
GPT-5
58.4
GPQA diamond
DeepSeek V4.1 Flash 1017 leads by +9.7
Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs.
DeepSeek V4.1 Flash 1017
94.7
GPT-5
85.0
Mystery Game Puzzles
DeepSeek V4.1 Flash 1017 leads by +28.6
DeepSeek V4.1 Flash 1017
43.8
GPT-5
15.2
OTIS Mock AIME 2024-2025
DeepSeek V4.1 Flash 1017 leads by +8.1
OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills.
DeepSeek V4.1 Flash 1017
99.4
GPT-5
91.4
SimpleQA Verified
GPT-5 leads by +8.1
SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information.
DeepSeek V4.1 Flash 1017
42.5
GPT-5
50.6
Full benchmark table
| Benchmark | DeepSeek V4.1 Flash 1017 | GPT-5 |
|---|---|---|
APEX-Agents APEX-Agents · evaluates AI agents on complex, multi-step tasks requiring planning, tool use, and autonomous decision-making in realistic environments. | 69.8 | 18.3 |
ARC-AGI ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization. | 94.5 | 65.7 |
ARC-AGI-2 ARC-AGI-2 · the second iteration of the Abstraction and Reasoning Corpus, testing novel pattern recognition and abstract reasoning without prior training data. | 78.1 | 9.9 |
Chess Puzzles Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities. | 43.2 | 37.0 |
FrontierMath-Tier-4-v2-Private | 46.3 | 21.9 |
FrontierMath-Tiers-1-3-v2-Private | 75.0 | 58.4 |
GPQA diamond Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs. | 94.7 | 85.0 |
Mystery Game Puzzles | 43.8 | 15.2 |
OTIS Mock AIME 2024-2025 OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills. | 99.4 | 91.4 |
SimpleQA Verified SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information. | 42.5 | 50.6 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $0.01 | $0.50 | 1.0M tokens (~524 books) | $1.29 | |
| $1.25 | $10.00 | 400K tokens (~200 books) | $34.38 |